Ferrites and accessories
Standards and specifications
Date:
October 2022
TDK Electronics AG 2022. Reproduction, publication and dissemination of this publication, enclosures hereto
and the information contained therein without TDK Electronics’ prior express consent is prohibited.
Standards and specifications
Standards and specifications
1
IEC standards
PIease refer also the latest CO publications (www.iec.ch)
Standard
Title
IEC 63093-2 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 2: Pot-cores for use in telecommunications, power
supply, and filter applications
IEC 60205 Ed. 4.0
Calculation of the effective parameters of magnetic piece parts
IEC 60401-1 Ed. 2.0
Terms and nomenclature for cores made of magnetically soft ferrites Part 1: Terms used for physical irregularities and reference of dimensions
IEC 60401-3 Ed. 2.0
Terms and nomenclature for cores made of magnetically soft ferrites –
Part 3: Guidelines on the format of data appearing in manufacturers
catalogues of transformer and inductor cores
IEC 63093-1 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 1: General specification
IEC 63093-11 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 11: EC-cores for use in power supply applications
IEC 60732 Ed. 1.0
Measuring methods for cylinder cores, tube cores and screw cores of
magnetic oxides
IEC 63093-6 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 6: ETD-cores for use in power supplies
IEC 63093-8 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 8: E-cores
IEC 63093-10 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 10: PM-cores and associated parts
IEC 61332 Ed. 3.0
Soft ferrite material classification
IEC 61333 Ed 2.0
Marking on ferrite core
IEC 63093-13 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 13: PQ-cores
IEC 63093-5 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 5: EP-cores and associated parts for use in inductors
and transformers
IEC 61631 Ed. 2.0
Test method for the mechanical strength of cores made of magnetic
oxides
IEC 62044-1 Ed. 1.0
Cores made of soft magnetic materials – Measuring methods – Part 1:
Generic specification
IEC 62044-2 Ed. 1.0
Cores made of soft magnetic materials – Measuring methods – Part 2:
Magnetic properties at low excitation level
Please read Cautions and warnings and
Important notes at the end of this document.
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Standards and specifications
Standard
Title
IEC 62044-3 Ed. 1.0
Cores made of soft magnetic materials – Measuring methods – Part 3:
Magnetic properties at high excitation level
IEC 63093-4 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 4: RM-cores
IEC 63093-7 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 7: EER-cores
IEC 63093-9 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 9: Planar-cores
IEC 63093-3 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 3: Half pot-cores made of ferrite for inductive proximity
switches
IEC 62358 Ed. 2.0
Ferrite cores – Standard inductance factor for gapped cores and its
tolerance
IEC 63093-12 Ed. 1.0
Ferrite cores - Guidelines on dimensions and the limits of surface
irregularities - Part 12: Ring-cores
1.1
Quality assessment
The IEC standards mainly specify dimensions, designations and magnetic characteristics, whereas
the European system of quality assessment CECC and the harmonized DIN-CECC standards
additionally define methods of measurement and quality levels.
Since 1982 the IEC has been establishing the so-called IEC Q-system, which will have worldwide
applicability. German DIN IEC standards are being harmonized with this quality system.
CECC and IEC-Q standards have a similar structure: they are subdivided into generic specifications
(GS), sectional specifications (SS) and blank detail specifications (BDS). The numbering system of
QC is analogous to that of CECC.
The detail specifications of CECC and IEC do not fully correspond to each other.
A quality assessment system of “Capability Approval” for the production of ferrite parts is being
established.
Please read Cautions and warnings and
Important notes at the end of this document.
3
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Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. We nevertheless expressly point out that such statements cannot be regarded as binding statements
about the suitability of our products for a particular customer application. As a rule, we
are either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to
check and decide whether a product with the properties described in the product specification is
suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current
state of the art, even if they are operated as specified. In customer applications requiring a
very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event
of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material
Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the foregoing
for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms
and Conditions of Supply.
Please read Cautions and warnings and
Important notes at the end of this document.
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7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard.
The IATF certifications confirm our compliance with requirements regarding the quality management system in the automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK always has and will continue to have the policy of respecting individual agreements. Even if IATF 16949 may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that only requirements mutually agreed upon can
and will be implemented in our Quality Management System. For clarification purposes we
like to point out that obligations from IATF 16949 shall only become legally binding if individually
agreed upon.
8. The trade names EPCOS, CarXield, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas,
CSMP,
CTVS, DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, InsuGate, LeaXield,
MiniBlue, MiniCell, MKD, MKK, ModCap, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod,
PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic,
SIMID, SineFormer, SIOV, ThermoFuse, WindCap, XieldCap are trademarks registered or
pending in Europe and in other countries. Further information will be found on the Internet at
www.tdk-electronics.tdk.com/trademarks.
Release 2022-07
Please read Cautions and warnings and
Important notes at the end of this document.
5
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